Kopparla, Pushkar and Natraj, Vijay and Spurr, Robert and Shia, Run-Lie and Crisp, David and Yung, Yuk L. (2016) A Fast and Accurate PCA Based Radiative Transfer Model: Extension to the Broadband Shortwave Region. Journal of Quantitative Spectroscopy and Radiative Transfer, 173 . pp. 65-71. ISSN 0022-4073. http://resolver.caltech.edu/CaltechAUTHORS:20160125-084322315
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Abstract
Accurate radiative transfer (RT) calculations are necessary for many earth-atmosphere applications, from remote sensing retrieval to climate modeling. A Principal Component Analysis (PCA)-based spectral binning method has been shown to provide an order of magnitude increase in computational speed while maintaining an overall accuracy of 0.01% (compared to line-by-line calculations) over narrow spectral bands. In this paper, we have extended the PCA method for RT calculations over the entire shortwave region of the spectrum from 0.3 to 3 microns. The region is divided into 33 spectral fields covering all major gas absorption regimes. We find that the RT performance runtimes are shorter by factors between 10-100, while root mean square errors are of order 0.01%.
| Item Type: | Article | |||||||||
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| Additional Information: | © 2016 Elsevier B.V. Received 4 August 2015, Revised 4 December 2015, Accepted 10 January 2016, Available online 16 January 2016. | |||||||||
| Record Number: | CaltechAUTHORS:20160125-084322315 | |||||||||
| Persistent URL: | http://resolver.caltech.edu/CaltechAUTHORS:20160125-084322315 | |||||||||
| Official Citation: | Pushkar Kopparla, Vijay Natraj, Robert Spurr, Run-Lie Shia, David Crisp, Yuk L. Yung, A fast and accurate PCA based radiative transfer model: Extension to the broadband shortwave region, Journal of Quantitative Spectroscopy and Radiative Transfer, Volume 173, April 2016, Pages 65-71, ISSN 0022-4073, http://dx.doi.org/10.1016/j.jqsrt.2016.01.014. (http://www.sciencedirect.com/science/article/pii/S0022407315300662) | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 63917 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Tony Diaz | |||||||||
| Deposited On: | 25 Jan 2016 17:19 | |||||||||
| Last Modified: | 15 Nov 2017 00:39 |
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